Post differentials. (a). A post differential may be granted on the basis of conditions of environment which differ substantially from conditions of environment in the continental United States and warrant additional pay as a recruitment and retention incentive.
We will also see that in order for a neuron to generate an action potential, the membrane potential has to depolarize from the resting value of around â70 mV to the threshold value of around â50 mV. A similar situation is also at play in muscle cells (skeletal, cardiac, and smooth).
At lengths less than about 70% of resting length, the muscle develops no tension at all when stimulated. It follows that, during an isotonic contraction, a skeletal muscle can only shorten to about 70% of its resting length, and it can only develop tension at lengths between 70% and 180% of resting length.hen a resting skeletal muscle is stretched from its resting length, i.e., its length at rest in the body, the parallel elastic elements are stretched and tension increases along the blue curve (A) in Figure 14-15.